Host Accelerated Modem 56K V.92 Chipset — 536EPXX
Preliminary Datasheet
Intel Confidential
27
8.0
Hardware Interfaces
The 536EPXX chipset supports hardware interfaces for the host, expansion bus, non-volatile RAM
(NVRAM), CODEC/DAA, speaker, microphone, and general-purpose I/O functions. The hardware
interfaces are demonstrated below.
8.1
NVRAM Interface
536EPXX is designed to support either 2K or 4K EEPROM in x8 or x16 mode. NVRAM can be
used to customize the Subsystem Vendor ID and Subsystem ID per the manufacturer’s
requirement. 536EPXX can also be used without the NVRAM, in this case 536EPXX will default
to one of the ID’s listed in
Table 16
depending on how the GPIO 8 through 11 are tied.
PCI configuration data to use.
Table 16
describes this.
Figure 4. Modem System Block Diagram (536EPXX)
MD1724
TIP
RING
HOST
MICROPHONE / SPEAKER
(OPTIONAL)
COMPUTER
DSP
DQ82536
AFE
PCI BUS
NVRAM
CODEC
DAA
536EPXX
Table 16. PCI Subsystem Vendor ID and Subsystem ID with No EEPROM
GPIO[10:8]
Subsystem Vendor
Subsystem ID
000
Reserved
1040h
001
Reserved
1040h
010
Reserved
1040h
011
Reserved
1040h
100
Reserved
1040h
101
Reserved
1040h
110
Reserved
1040h
111
Reserved
1040h
000
Intel (ID = 8086)
1000h
